Which questions does this tag cover? A good example question is understanding "virtual memory", getting to understand something is key to being able to solve problems related to that subject. homework is about these types of questions. A bad example question is please make this Unix assignment for ...
1
vote
1answer
64 views
Where can I find information on group policy compatibility between Windows OS versions?
I am having trouble trying to find information on group policies compatibility between different versions of Windows. I have to find this information for a school assignment I need to complete. Does ...
0
votes
1answer
19 views
per-host-pair cryptographic keys on a network
Got a homework question here that I have been staring at for a while. I am being asked how many keys will exist in a network of 'n' number of nodes with keys being distributed on a per-host-pair ...
-3
votes
5answers
416 views
Why does 1KB contain 1024 bytes when 1KB = 1000 bytes? [closed]
Why does 1KB equal 1024 bytes? I know that 1KB also stores 1000 bytes.
That is, I've been told that 1Kb equals 1024 bytes, but my professor says that it's 1000 bytes and that Linux doesn't use the ...
0
votes
0answers
56 views
Direct Mapped Cache
My apologies if this is the wrong stackexchange for this; it just seemed like the closest one to a place that could be of help for computer architecture. For a homework problem in computer systems I ...
2
votes
1answer
139 views
Difference between the Windows and Linux thread scheduler
As far as I can tell, both use:
Multilevel feedback queue
Priority levels (different range)
Both manage threads and not the process
But what are the big differences?
Thanks
-2
votes
1answer
69 views
Explain the behavior of the following shell script [closed]
Explain the behavior of the following shell script:
$ cat quote_demo
twoliner="This is line 1.
This is line 2."
echo "$twoliner"
echo $twoliner
How many arguments does each echo command see in ...
1
vote
1answer
208 views
virtualbox virtual machine on usb flash drive
In my Linux class, we created virtual machines on flash drives, and installed Lubuntu on them. We are supposed to be able to now run our virtual machines on any computer with oracle vm installed, at ...
-2
votes
1answer
73 views
Encryption schemes [closed]
1.In class we have learned about how to perform challenge-response authentication using public key digital signature. As mentioned, there is a similar scheme that uses public key encryption. could you ...
0
votes
1answer
21 views
How to Make Linux Partition Boootable?
I need a help, Ive ended up on my Linux machine without a bootable drive, I need to make one of my Drives bootable?
Any Ideas
0
votes
0answers
44 views
How is an internal NIC connected to the main board? [closed]
Is an internal Network Interface Card connected to the mainboard through a bus system or directly wired to the chipset or something else? How do the 2 communicate? I am interested in specifics.
-1
votes
1answer
150 views
RAM requirements 0.5 second frame buffer - video card 30fps, screen res of 1280x1024, color depth of 4-36 Bits? [closed]
How much RAM is required for a 0.5 second frame buffer on a video card that is displaying 30fps, has a screen resolution of 1280x1024, and uses a color depth of 4-36 Bits?
As a programming student I ...
1
vote
1answer
52 views
Delete newlines using Stream editor (sed)
I need to write a sed script that places the actual text of the subtitles in a srt file on a single line.
If this text originally was split over multiple lines, the line break and possible ...
0
votes
1answer
48 views
Token Ring - is a MAU required?
I'm writing a paper for school on Token Ring, but I'm having trouble discerning something. From what I understand, there are two types of Token Ring networks: wired, and star-wired.
I understand ...
1
vote
1answer
88 views
Subnetting - how to?
I can't cope with this MS 70-291 Training Kit Task:
What is the configuration error in the diagram below and WHY?
(btw: I have removed original, wrong mask which was editors error and placed big red ...
0
votes
1answer
93 views
How to write a script that does what less does?
Question: Create a script such that it is a command that has the same effect as the "less" command (implement the script by calling "less").
What I wrote:
#! /bin/bash
for index in "$@"
do
less ...
0
votes
2answers
68 views
working with graphic interface on ssh linux
We have a project involving linux programming. Unfortunalty, we have only an ssh interface, and not a convinient graphic one. What can we do? We heard that xterm can solve our problems, but we ...
3
votes
1answer
52 views
Configuring subnets quandry
I am learning the basics of subnetting however am faced with a dilemma on approaching the issue. For example I have been tasked to set up a network with 20 hosts using a Class C network addressing ...
0
votes
1answer
46 views
Adding percent value in cell to a dollar amount in Excel
I have a column of currency formatted cells (C8:C15) and a markup rate of 15% which is entered into B19. I want to have the markup rate applied to C8:C15. Starting with C8 I entered the formula =B8 + ...
1
vote
1answer
294 views
Can I temporarily affect ARP table without using `arp` command directly?
I have some knowledge about arp command under linux which can help modify the ARP table. Now I want to temporarily affect ARP table(add, delete and change) entries without the help of arp.
For ...
0
votes
1answer
147 views
Find duplicate file use cmp command
I would to write a bash script to find duplicate files but I don't want just use md5sum.
It means, in addition to use md5sum I want to check my files with cmp command.
I use the command below for ...
1
vote
1answer
388 views
What is the purpose of a routing protocol? [closed]
I'm studying for CCNA 2 exam. Here's one of the questions. I already know the answer. What I am looking for is the reason why the incorrect answers are...incorrect. =)
For example, the question is:
...
0
votes
3answers
131 views
Can't seem to change directory - “No such file or directory” error using PuTTY
I am required to use PuTTY to submit a program but I have never used it before and am having a hard time changing my directory. I am successfully connected to a Linux computer from my own but can't ...
2
votes
1answer
125 views
What privilege is required to preserve ownership of a file on copy, and how do you get it?
I have a homework question about kernel programming in Linux. The question is:
What Linux-specific privilege is required to preserve ownership of a file when it's copied, and how do you get it?
...
0
votes
2answers
329 views
subnet mask creater
Create a sub net mask for 512 subnets using 172.31.0.0
The default sub net mask for a class b network is 255.255.0.0, working through the borrowing off bits using the formula 2^n, n being the bits ...
0
votes
1answer
182 views
Mask a class D IP address
Last time I asked about masking class D ip addresses. I found that we cannot mask class D IP addresses. But, now I have another question about masking D class IP addresses:
If I want to recieve a ...
2
votes
3answers
235 views
Class D ip address
Is there mask for class D ip address? As it is for multicast, I am not sure about it.
I read somewhere that D ip addressas are 32-bit network addresses and they dont have hostID, but in the following ...
0
votes
1answer
150 views
How do I calculate how long a packet will reach its destination?
I am stuck with this homework question. I honestly have no clue what it is talking about. I been absent from class due to some personal reasons.
The question asked: You are transmitting 100 bit ...
1
vote
2answers
134 views
The CPU Utilization of a computer is 100%. Is it possible to execute a new application under the above condition?
The CPU Utilization of a computer is 100%.
Is it possible to execute a new application under the above condition?
0
votes
3answers
2k views
what is a core in terms of a processor? [closed]
Possible Duplicate:
Can someone clear up the terms Core Duo CPU, Quad Core, Dual CPU, etc.?
In a processor, what is the core? I hear the terms i3, Core 2 Duo, and Dual Core, what do they ...
0
votes
1answer
120 views
MS Excel pivot table
I have an Excel file: payroll.xlsx
I need to do the following, but I'm not sure how:
Create a pivot table that computes per
employee how many times s/he checked
in and her/his average amount ...
3
votes
3answers
212 views
how to create a file and delete a file using “-” symbol
How would you create and then delete a file that begins with the symbol "-"? Try it.
I can't write the command for this question and I don't why. Can anyone help me?
5
votes
2answers
316 views
How to create a file using the “#” symbol in linux?
I've tried many commands already for creating a file and deleting a file using the # symbol, but it does not work. Can anyone tell me the command to create and then delete a file that begins with the ...
1
vote
3answers
331 views
Using egrep to find lines that have 5-6 Upper Case letters. (but not more than 6)
First off, this is homework and unfortunately I have to use egrep (and not with -w or anything of the like).
I need my grep to return lines that have exactly 5 or 6 upper case letters.
Doing ...
1
vote
4answers
487 views
(bash) Grep question - how to grep for a line that has the same number you both need and don't need
This isn't at all easy to explain but easy to just show.
I have lines in a file such as:
100Dollars 3 IP
200Dollars 3 IP
300Dollars ...
1
vote
0answers
140 views
Microsoft Project 2007: entering tasks and subtasks
I'm using Microsoft Project 2007 for school. My assignment is a template from the teacher with main tasks and a preset number of days for the duration.
When I enter a subtask, put in the number of ...
2
votes
3answers
200 views
what is HTML payload?
I have to do an assignment and the following is specified:
Extract these items:
<content type="HTML">
quoted HTML payload
</content>
the extraction refers to an XML feed. What exactly ...
0
votes
1answer
162 views
Homework with allocate subnet IP address
I'm having difficulty solving a subnet allocation homework problem.
Assume that a university has an address block 128.205.224.0/19. It has to allocate addresses for 2 departments' networks, each of ...
1
vote
3answers
260 views
What file systems does Windows 2008 support?
I'm doing a schoolwork assignment and I'm currently on the question:
"What file systems does Windows 2008 support?"
Sounds easy but I dunno if it's a trap. It would be easy to say FAT32, NTFS etc. ...
-3
votes
1answer
93 views
What is Virtual Memory? [closed]
I would like to know what you guys think Virtual Memory is . Also Could you explain to me how the development of Virtual Memory has impacted operating systems and the personal computer.
0
votes
3answers
258 views
Prompting for and accepting input in Windows PowerShell
In a trivia script, how would you enter a fill in the blank question and an answer like the Seinfeld trivia game in Programming for Beginners? Please help - it is homework.
0
votes
4answers
124 views
linux grep command
Here is my question I need help with. This has to also show the line count. I can get it to show the files but not the line count.
What is the single command used to identify only the matching ...
0
votes
1answer
325 views
why is byte stuffing preferred to use with PPP
why is byte stuffing preferred to use with PPP
i read both can be used bit and byte, but book question is the above, i cant think of any reason
can you?
1
vote
1answer
178 views
What is the purpose of the network id?
I know that for addresses like e.g. 192.168.17.5 with 255.255.255.0 subnet mask, address 192.168.17.0 is the network id and 192.168.17.255 is the broadcast address and that valid hosts are from ...
1
vote
4answers
1k views
Can you have a class C IP address with a subnet mask of 255.255.0.0?
Can you have a class C IP address with a subnet mask of 255.255.0.0?
What happens when you have a setting like this?
2
votes
2answers
436 views
Finding multiple file extensions in command prompt window
I am trying to use multiple parameters to find 3 different extensions in my windows/system32 in one command: .exe, .dll and .sys
This is giving me what I want, but I can't figure out how to get all 3 ...
-3
votes
1answer
152 views
Anyone knows all 3 components of mainboard in this picture? [closed]
Can you list their names and short description on their functionality?
2
votes
5answers
425 views
What parts of the OS are the most important?
I've got an assignment to complete where I compare two operating systems of equal vintage, however my instructor hasn't really given me much of a scope for this? He has basically asked for 2000-2500 ...
0
votes
1answer
175 views
Where to place a script file so it runs on every startup [closed]
Possible Duplicate:
how to run shell (bash) script automatically at startup?
Hey there,
I need to do some more homework ;-)
The question is where do I have to place a script so it runs on ...
2
votes
4answers
2k views
tar - exclude does not work
I've supposed to archive a directory with tar and exclude some files. I have a directory $HOME/java which includes some .java and .class files. What I want to do is exclude all .class files using the ...
1
vote
2answers
150 views
maximum size filesystem on my test … approach?
Hello all I'm new at the site, and I have a question. I got this question at a test and really like to know the correct approach to solving this problem?
Here is the question.
In an indexed ...
